Thirds to adolph reutlinger and moses schwartz



2 Sheets-Sh'eetfi.

(No Model.)

Patented Aug. 4, 1885.

F. STITZEL.

STUFFING BOX.

ZM ZhC Attorney,

u. Pmns. mwum m. wzimn um o a (No Model.) 2 sl eets -Sheet 2.

F. STITZEL.

STUFFING BOX.

No. 323,750.. Patented Aug.- 4, 1885.

Y in WITNESSES {I 06' 2 Z JJVVEJVTOR QILQ W W Attorney.

UNITED STATES PATENT OFFICE.

FREDERICK STITZEL, OF LOUISVILLE, KENTUCKY, ASSIGNOR OF TWO- THIRDS TO ADOLPH REUTLINGEB AND MOSES SCHWARTZ, BOTH OF SAME PLACE.

SJPECIFICATION forming part of Letters Application filed Noven To all whom it may concern:

Be it known that I, FREDERICK STrrzEL,

. a citizen of the United States, residing at Louisville, in the county of Jefferson and State of Kentucky, haveinvented certain new and useful Improvements in Stuffing Boxes, of which the following is a full, clear, and exact description.

The object of this invention is to provide means readily accessible on the outside of stuffing-boxes for tightening up the packing as it becomes loose, without removing any of the parts.

To this end the invention consists in a stuffing-box the gland of which is made movable longitudinally of the piston-rod by .a worm and worm-wheel mechanism operable from outside the box to compress the packing, substantially as hereinafter particularly set forth and claimed.

In the accompanying drawings illustrating. my invention, in the several figures of which like parts are similarly designated, Figure 1 is a vertical longitudinal section; Fig. 2, a vertical cross-section in the plane of lineww, Fig. 1; and Fig. 3 is a bottom (with relation to Figs. 1 and 2) plan view. Fig. 4 is a vertical longitudinal section of another form; Fig. 5, a vertical cross-section thereof in the plane of line 3 y, Fig. 4, and Fig. 6 an end elevation. Fig. 7 is an end elevation of still another form, on a smaller scale. I

For convenience of illustrating one application of my invention, a portion of a piston-rod, a, and the head 12 of its cylinder are shown. To the head I) is bolted the bonnet c, which is shouldered at d, and within the space covered by this bonnet the cylinder-head has an annular bead or lugs, e, and also an exteriorly screw-threaded annular chambered boss, f. The bonnet is also provided with a similar (preferably smaller) boss, g, at its outer end. The chamber of the boss f receives packing h of suitable sort, which is retained therein by the gland i, and this gland is held up to the packing adj ustably in the direction of its length by a flanged nut, j, which engages the screw-threads of the boss f to this end. The nut j is encircled by a WOIIIl WhGtfl, k, and the two are engaged to.

STU FFlN G-BOX.

Patent No. 323,750, dated August 4, 1885.

11m 3, 1884. (No model.)

turn together by feathers or splines Z on the outer surface of the nut. This or any equivalent mode of connection of the nut and wormwheel will permit the nut to travel in the direction of its length on the boss f as it is rotated by the worm-wheel. The worm-wheel is a worm-toothed annulus, audit is held in place 011 one side by the bonnet, (as by its shoulder d,) and on the other by an annular band or equivalent support, m, which in turn is held in place by the bead or lugs e on the cylinder-head b. The worm-wheel is rotated by the worm n on the shaft 0, which is suitably supported in the bonnet and provided with facilities for rotating it outside of the bonnet. Ihaveshownthisworm-shaftstepped at one end in the foot of the tubular portion a of the bonnet 0, and supported at its other end in a bushing, 10, tapped into said tubular portion 0, to close it air, gas, or steam tight; and to further insure the tightness of this stoppering I provide the bushing with an annular flange, p, which fits over the mouth of the tubular portion 0, and which receives the screwthreaded cap q, between which and the end and flange of the bushing packing may be interposed, as indicated in Fig. 2.

The worm-shaft 9 has the end 0 projecting beyond the bushing and cap and squared to receive a wrench, whereby it may be rotated, and it is obvious'that rotating the wormshaft in one direction turns the worm-wheel, and it the nut, and drives said nut toward the cylinder-head, and that said nut consequently forces the gland i in the same direction, either by rotation or otherwise, and tightens up the packing, and all this is done without any removal of parts and consequent stoppage of machinery, and hence it will appear the rod may be kept always packed tight the chambered boss f, with packing h and gland 17,- but the boss is enlarged laterally at f to form the base of the bonnet c, and this bonnet is bolted to said enlargement, substantially as shown, leaving a rim, m, which takes the place and subserves the purposes of the annular band in. The flange of the gland is extended laterally and perforated at, say, diametrically opposite points, and through these perforations the screws t I; loosely pass. These screws are fixed against rotation in any suit able manner in the boss and bonnet, and are each provided with a nut, j, one end of each of which nuts bears against the flange of the gland. Each of these nuts is provided with a worm-wheel, k, fitted thereon to turn it, this fitting being here shown as square. Each worm-wheel is engaged by a worm, n, on the worm-shaft 0, arranged substantially as in the former case. It is obvious that rotation of the worm-shaft in one direction will so turn the worm-wheels and their engaged nuts j j as to drive said nuts toward the cylinderhead, and hence force the gland in the same direction and so compress the packing h.

The terminal boss 9 of the bonnet is chambered and provided with packing; but its gland 'r is adjustably held therein by screwhooks or bolts .9, engaging its flange, and secured by nuts 8.

In Fig. 7 I have indicated an arrangement which is simply the doubling of the screws, nuts, worm-wheels, worms, and wornrshafts of the last above-described box. It is also obvious that three independent sets of screws, worm-wheels, worms, worm-shafts, &c., may be used.

The mode of keeping the packing of rods tight herein set forth is particularly advano ta 'eous in as com )ressors for ice machiner 4 a 2: y a

but I extend its applicability to all kinds of machinery where it is important to keep tight joints to prevent leakage through stuifing-boxcs.

hat I claim is" 1.. A stuffing-box comprising a chambered boss to receive packing, a gland therein, one or more worm-wheels and its or their operating worm or worms, and connections between said worm-gearing and gland whereby said gland is adjusted longitudinally to tighten up the packing, substantially as set forth.

2. A stuffingbox comprising a chambered boss on the cylinder-head-to receive packing for the piston-rod, a gland fitted on the paeking in the chamber of said boss, and wormgearing connected with said gland and operated from outside the box to move said gland to tighten up the packing, substantially as set forth.

3. A stuffing-box comprising a boss chambered to receive packing, a gland therein operated from outside the box through the medium of worm-gearing, a bonnet inclosing the boss and gland and extended beyond the same into a chambered boss having packing therein, and agland, and means, substantially as set forth, for moving said gland longitudinally without detaching the parts, substantial] y as described.

at. The combination of the chambered boss provided with packing to engage the pistonrod passing through it, a gland to keep said packing in place, a nut engaging said gland to hold it in place, a worm-wheel and wormshaft cooperating with said nut to adjust the gland, and an inclosing-casing through which the worm-shaft is readily accessible, substantially as and for the purpose described.

5. The combination of the annular chambered exterior-1ythreaded boss, packing and superposed gland therein, flanged nut engaging the boss and gland, an annular wormwheel engaging said nut to turn it and yet leave it free to move longitudinally as it is turned, a worm-shaft for turning the wormwhcel, a shouldered bonnet, and a band, between which last two the worm-wheelv is secured, substantially as set forth.

6. The combination of the chambered boss, packing and superposed gland therein, a nut engaging said gland and movably fixed to the boss, a wormwheel engaging said nut to rotate it and at the same time permit it to move longitudinally through it, and a wormshaft meshing with the worm-wheel, substantiall y as set forth.

In testimony whereof I have hereunto set my hand this 30th day of October, A. D. 188 1.

FREDERICK STITZEL.

\Vitnesses:

Annnirr REUTLINGER, Cnas. Pint. llIiLLian. 

